Portable furnace.



No. 695,0l5. Patented Mar. H, 1902.`

J. WARD. y PDRTA'BLE FuRNAcE.

(Application led Max'. l1` 1901.)

ym/mz Yi-ni cams PETERS co. moro-umu, ma D UNITED STATES PATENT OFFICE.

JAMES IVARD, OF DELAVAL, ENGLAND, ASSIGNOR TO INTERNATIONAL OIL FURNAOECOMPANY, LIMITED, OF SOOTSVYOOD ROAD, DELAVAL, NEAR NEWOASTLE-ON-THETYNE, COUNTY OF NORTHUMBERLAND, ENGLAND.

PORTABLE FU RNAC.

SPECIFICATION brming part of Letters Patent N0. 695,01 5, dated March 11 1902. Application filed March ll, 1901, Serial No. 50,730. No model.)

To @ZZ whom t may concern:

Be it known that I, J AMES WARD, a sub j ect of the King of England,residing and having my post-oflice address at Scotswood road, Delaval,near Newcastle-upon-Tyne, county of Northumberland, England, haveinvented a certain new and useful Improvement in Portable Furnaces, ofwhich the following is a specification.

1o This invention relates to an improved portable furnace forapplication to single or double flued boilers, gas-retorts, kilns forbricks, ware, and the like, drying-stoves, and for analogous purposes.

Referring to the accompanying drawings, Figure l is a front view offurnace; Fig. 2, cross-section thereof; Fig. 3, a longitudinal section;Fig. 4:, an elevation of the back of the furnace, showing flues dividedinto two for zo double-fined boilers, die. Fig. 5, cross-section of afuel-tray. A

The furnace consists of two chambers a and b, one behind the other, andthe fuel used is crude petroleum, paraffin, or other suitable oil; butoils more or less rened may be used. The fuel is vaporized and partiallycombusted in the front chamber ci, andin the back chamber b the vapor orgas is heated and further partial combustion takes place. AThe fuel is3o contained in one or more shallow troughs or trays e, one above theother, suitably supported either on a framing Xed to the furnace or on aframing g, thatmay be drawn out of the furnace, in the latter case saidframing 3 5 being mounted on wheels 7i, adapted to run on rails orbarsj. The trays preferably project a short distance outside thefurnace, and the i tops thereof are provided with sliding plates f ordampers-to regulate the vaporization of 4o the oil. A suitably-supportedpipe 7o, provided with a regulating valve or cock Z, conveys the oiltothe trays by means of short bent pipes u, having funnels on their ends,the supply to each tray being also provided with aseparate valve or cockm.- Provision is made on said pipe 7c for connecting, by means of aexible or other pipe, to the reservoir or tank containing the oil. Theside walls of the furnace are hollow. A slide or door o in the 5o frontof the furnace and at each side of the chamberand near the bottom admitsair into the hollow walls, said air being heated by passing backward andforward through a series of passages p Q r si until it is discharged,through a flue u in the back and near the top 5 5 of the furnace. Thesepassages may be checkered to give more heating-surface. The gas orvaporized oil is conveyed from the vapo-A rizing-chamber u, by a iiue oin the bottom to the heating-chamber b, and out of this cham- 6o ber bya iiue o in the back of the furnace and immediately below the airdischarge ilue. The d otted arrows show the direction or flow lof theheated air and the full arrows the flow of gas. The chambers are linedwith any suit; able refractory material; A suitable metallic casing a:is provided for holding the Whole together, and the furnace is carriedon suitable wheels or rollers w.

When the furnace is used, the back of itis 7o closely connected to thefront of the boiler,

dac., so that the air and gas dues are in immediate and directcommunication with the .boiler-due, dre., in which the air and gascombine and complete combustion takes place. The mode of connectionbetween the furnace and the boiler, dac., -is modified to suit theindividual case.

What I claim is- In a furnace of the character described the 8ocombination of a vaporizingchamber a, a heating-chamber b incommunication therewith at its lower part, tortuous air-passages on eachside of said chambers ab, aslide for admitting ai;1 to the lowerrnostendof each of 85 said passages an outlet 'v for discharge of gas fromsaid heating-chamber b, aline u for discharge of air from theuppermost'end of each of said passages, trays ein said vaporizingchamberfor receiving the fuel ,said trays be- 9o ing mounted in a frame g, asupply-pipe la having a stop-valve Z and cocks in said pipe la forregulating the iiow Vto each tray through short pipes, provided withfunnels, and a metallic casinga: for holding thewhole together,substantially as described.

In Witness whereof I have signed this specification in the presence oftwo witnesses.

JAMES VARIL Witnesses:

R. W. RTDLEY, W. H. fonnnve.

